668683346 has 8 divisors (see below), whose sum is σ = 1004549040. Its totient is φ = 333833668.

The previous prime is 668683333. The next prime is 668683373. The reversal of 668683346 is 643386866.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 668683294 and 668683303.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252356 + ... + 254991.

It is an arithmetic number, because the mean of its divisors is an integer number (125568630).

Almost surely, 2^668683346 is an apocalyptic number.

668683346 is a deficient number, since it is larger than the sum of its proper divisors (335865694).

668683346 is a wasteful number, since it uses less digits than its factorization.

668683346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508008.

The product of its digits is 2985984, while the sum is 50.

The square root of 668683346 is about 25858.9123127791. The cubic root of 668683346 is about 874.4604438487.

The spelling of 668683346 in words is "six hundred sixty-eight million, six hundred eighty-three thousand, three hundred forty-six".